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Answer:
Step-by-step explanation:
If A, B, and C are on the same line, they have the same slope.
k is slope.
k(AB) = [tex]\frac{(1+2)}{(3+3)} =\frac{1}{2}[/tex];
K(BC)=[tex]\frac{2-1}{5-3} =\frac{1}{2}[/tex];
So k(AB)=K(BC)